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The article describes the search for optimal motion path of the positional electric drive under conditions of an indefinite (statistical) characteristics of the load. It is shown that the triangle is the optimum shape of the speed curve, and the ratio of its sides depends on the type of the load diagram, in particular on the influence of the main drive of the pilgering mill, and is independent on...
This paper presents a model of a complex electromechanical system based on a new type of electromechanical converter — a field regulated reluctance machine (FRRM). The problem of optimal regulation of a multiphase electromechanical converter is formulated according to the criterion of minimum costs for the installed power of an electric drive and a semiconductor converter. The second task of optimizing...
A painting robot ARTCYBE is a machine developed to imitate an ability of a human painter to create realistic images with acrylic paints and a brush. In this paper a brushstroke rendering algorithm for this robot is presented. The algorithm converts a source bitmap image into a set of brushstrokes which we call a brushstroke map. The brushstroke map can be unambiguously transformed into a list of commands...
Control over the state of the cardiovascular system is found in cardiac monitoring devices, namely in electrocardiography. When registering electrocardiograms with the help of electrodes located on the patients torso, the impact of electrical and physiological disturbances is unavoidable. In this article presents a new approach of adaptive processing of ECG signals, to eliminate electrical and physiological...
The optimal control laws for complex multiply connected objects are considered in the article on the example of systems of traction mechanisms by the criterion of minimum losses in the gas-air path. A mathematical model of a multiply connected object is proposed, which includes a gas-air path, an electric drive and a control system. The values of electricity consumption by electric drives of draft...
Using the equations of compatibility of deformation and equilibrium between the turns of the threaded connection solved the problem of load distribution in the turns of the thread. Based on the selection of the turns of the screw and nut with different pitches of effective design-technological method enabling to align the load distribution between turns and thereby increase the durability of threaded...
The article is devoted the problem of developing mathematical models for determining the microstructure of hail clouds by results of measurements of radar reflectivity from the hail clouds. Determination of microstructure of hail clouds by radar characteristics is reduced to solving integral equation of Fredholm 1 kind that belongs to the class of inverse problems of scattering theory and is an ill-posed...
Mechatronic modules with field regulated reluctance machine have improved mass-size parameters and can be used to drive the actuator valve of metallurgical production. The article shows the stages of synthesis of a mechatronic module elements': the selection of the parameters of the electric drive's power elements (the main dimensions of electromechanical converter), the control system (speed control...
The article deals with the problem of developing a channel for recording phonocardiograms in electronic stethoscopes. The development of a channel for recording phonocardiograms for the further development of electronic stethoscopes is an actual task in the field of biomedical engineering for today. When registering phonocardiograms with an acoustic microphone (sensor) located on the patient's torso,...
Cerebral palsy (CP) is the most common children and adults movement disorder that is associated with life-long disability and multiple impairments. Children with CP demonstrate poor fine and gross motor function due to psychomotor disturbances. Early rehabilitation programs are essential for children with CP and should be appropriate for the age and functional condition of the patients. Robot-assisted...
This paper considers a biologically inspired source-seeking algorithm in the system of three-dimensional spatial tracking based on biologically inspired behaviour-based approaches. Tracking system is a flying robot, for example, unmanned aerial vehicle or a multicopter. The flying robot searches hazardous pollutants in dangerous environments. The task of the flying robot is to find the source of invisible...
The article presents the original hypothesis of identification of unknown parameters of low-frequency fluctuations of the cosmic microwave background. Its essence consists in the fact that in the process of evolution of organisms under the influence of microwave radiation of the sun characteristics of its low-frequency fluctuations are reflected in the basic properties of the neural mechanism of regulation...
This article is devoted to the actual problem of medical equipment — the creation of a portable analyzer for monitoring blood biochemical parameters: glucose and cholesterol. A correlation analysis of the concentration of glucose and cholesterol in the blood with the parameters of arterial pressure (BP) and excess body mass index (BMI) was carried out using computer simulation. Imitative models are...
The paper considers WBAN and intersegment WBAN communication approaches. At present, WBAN is rapidly developing. So, it's necessary to study not only WBAN standards and technologies, but also WBAN to WBAN interaction, especially using IBC. In this work the IEEE 802.15.6 standard is considered, BodyCom technology has been studied. Practical tasks that can be solved by IBC WBAN intersegment communication...
The current literature review provides an analysis of fundamental studies on the −2proPSA index and prostate health index PHI and determination of their role in patients with prostate cancer. The authors revealed the basic aspects of the studied markers such as the improvement of prostate cancer detection, increase of specificity and reduction of unnecessary biopsies, identification of aggressive...
The one-dimensional problem with a free boundary that describes processes of cooling and freezing biological tissue using cryoprobes with applicator of spherical and hemispherical shapes is studied in this paper. A difference scheme is constructed. To solve the difference problem the algorithm is developed by a matrix-oriented environment (MatLab). The results in this paper are presented in graph...
The problem of adaptive reduction of noise of phonocardiograms (PCG) The problem of adaptive reduction of noise of phonocardiograms (PCG) based on wavelet transformation is considered in the article. Adaptive noise reduction is realized on the basis of the wavelet decomposition of the PCG using the Daubechies 4 wavelet function. The Daubechy 4 wavelet function is identical to the PCG patterns and...
Based on the results of performed work, and also on the basis of statistical analysis and analysis of the development of medical and robotic technologies during last decades, article considers possibility of creating a new generation assisting mechatronic robot-surgical complex based on fundamentally new architecture. Here is presented a work of interdisciplinary engineers and doctors team, are discussed...
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